(19)
(11) EP 1 447 947 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
11.01.2006 Bulletin 2006/02

(43) Date of publication A2:
18.08.2004 Bulletin 2004/34

(21) Application number: 04290268.4

(22) Date of filing: 30.01.2004
(51) International Patent Classification (IPC): 
H04L 12/56(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
Designated Extension States:
AL LT LV MK

(30) Priority: 11.02.2003 US 364069

(71) Applicants:
  • ALCATEL
    75008 Paris (FR)
  • International Business Machines Corporation
    Armonk, N.Y. 10504 (US)

(72) Inventors:
  • Barri, Peter Irma August
    2820 Bonheiden (BE)
  • Basso, Claude
    Raleigh North Carolina 27613 (US)
  • Calvignac, Jean
    Raleigh, NC 27606 (US)
  • Gorti, Brahmanand Kumar
    Cary, North Carolina 27519 (US)
  • Logan, Joseph Franklin
    Raleigh North Carolina 27613 (US)
  • Vaidhynathan, Natarajan
    Greensboro North Carolina 27407 (US)
  • Verkinderen, Johan Gabriel August
    9000 Gent (BE)

(74) Representative: Plas, Axel Ivo Michel et al
Alcatel Bell N.V., Francis Wellesplein 1
2018 Antwerpen
2018 Antwerpen (BE)

   


(54) Frame alteration logic for network processors


(57) Packet switching node in a communication system includes apparatus for receiving incoming information packets or frames which contain header portions with formatting control blocks. Information in the frame's header contains frame alteration commands for modifying the information in the frame. The modifications include adding new information, deleting information, and overlaying information. Decoders and control devices in an alteration engine interpret the commands and apply the modifications to the frame data. Common and standard data patterns are stored for insertion or overlaying to conserve data packet space.







Search report